selftest: af_unix: Add test for SO_PEEK_OFF.

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The test covers various cases to verify SO_PEEK_OFF behaviour
for all AF_UNIX socket types.

two_chunks_blocking and two_chunks_overlap_blocking reproduce
the issue mentioned in the previous patch.

Without the patch, the two tests fail:

  #  RUN           so_peek_off.stream.two_chunks_blocking ...
  # so_peek_off.c:121:two_chunks_blocking:Expected 'bbbb' == 'aaaabbbb'.
  # two_chunks_blocking: Test terminated by assertion
  #          FAIL  so_peek_off.stream.two_chunks_blocking
  not ok 3 so_peek_off.stream.two_chunks_blocking

  #  RUN           so_peek_off.stream.two_chunks_overlap_blocking ...
  # so_peek_off.c:159:two_chunks_overlap_blocking:Expected 'bbbb' == 'aaaabbbb'.
  # two_chunks_overlap_blocking: Test terminated by assertion
  #          FAIL  so_peek_off.stream.two_chunks_overlap_blocking
  not ok 5 so_peek_off.stream.two_chunks_overlap_blocking

With the patch, all tests pass:

  # PASSED: 15 / 15 tests passed.
  # Totals: pass:15 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20251117174740.3684604-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Kuniyuki Iwashima 2025-11-17 17:47:11 +00:00 • committed by Jakub Kicinski

parent 7bf3a476ce

commit e1bb28bf13

3 changed files with 164 additions and 0 deletions

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1

tools/testing/selftests/net/.gitignore vendored

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1

tools/testing/selftests/net/af_unix/Makefile

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162

tools/testing/selftests/net/af_unix/so_peek_off.c

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